Heriberto has grand adventures in his dreams. But when he makes friends with Heriberta the duck, he learns to get to know himself, to see that he had become so used to living with his eyes closed that he hadnt even realised what he himself was like. And as he looks at Heriberta, he learns to get to know himself. Heriberto keeps looking around with his eyes wide open, and he sees the sky, the trees, the river . . .
In wonder, he notes that there are hundreds of blended colours in the world, and he finally starts dreaming in colour. Every afternoon when the sun goes down, Heriberto and Heriberta open their eyes while in the sky the stars appear hanging on high, and the two friends tell each other the dreams theyve had.